The video below has been rendered with the Raydiant rendering engine, also all the geometry has been procedurally generated with Raydiant from a digital photo using http://cutemosaic.com. As you will see there are several gear floors mounted in a clock like fashion. At the beginning of the video a close-up of an emerald bearing shows refraction and reflection. The surface of the uppermost plating is bumpmapped and modelled with triangles. Also cylinders, stretched spheres and boxes are used as geometric primitives. The gears are procedurally bumpmapped on the edges. Everything has global illumination and several material kinds with unique light scattering/dispersing profiles are used. Can you see what is depicted by the whole gear maze? Pay attention to the inscriptions along the way and make sure you watch it on HD setting.